.c_container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(
      -45deg,
      #667eea,
      #764ba2,
      #6B8DD6,
      #8E37D7
    );
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    position: relative;
    overflow: hidden;
  }
  @keyframes gradientBG {
    0% {
      background-position: 0% 50%;
    }
    50% {
      background-position: 100% 50%;
    }
    100% {
      background-position: 0% 50%;
    }
  }
  .c_container::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
  }
  
  .c_card {
    width: 600px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    transition: all 0.3s ease;
  }
  
  .c_card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  }
  
  .c_header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
  }
  
  .c_title {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(to right, #667eea, #764ba2);
    -webkit-background-clip: text;
    color: transparent;
    transition: all 0.3s ease;
  }
  
  .c_input {
    transition: all 0.3s ease;
  }
  
  .c_input:hover {
    transform: translateX(5px);
  }
  
  .c_input:focus-within {
    animation: shake 0.5s ease-in-out;
  }
  
  .c_button {
    transition: all 0.3s ease;
  }
  
  .c_button:hover {
    transform: scale(1.02);
  }
  
  @keyframes rotate {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
  
  @keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
    100% { transform: translateX(0); }
  }
  
  /* 覆盖 antd 默认样式 */
  :global(.ant-card-head) {
    border-bottom: none;
    padding-bottom: 0;
  }
  
  :global(.ant-input-affix-wrapper) {
    transition: all 0.3s ease;
  }
  
  :global(.ant-input-affix-wrapper:hover) {
    transform: translateX(5px);
  }